Roller-bearing



(N0 Model.)

R. EICHSTBADT,

ROLLER BEARING.

' No. 563,146. Y Patented June 30, 1896.

UNITED STATES PATENT OFFICE.

ROMAN EICHSTEADT, OF MICHIGAN CITY, INDIANA.

ROLLER-BEARING.

SPECIFICATION forming part of Letters Patent N o. 563,146, dated June30, 1.896.

Application ned March is, 1896.

To all whom, t may concern.-

Be it known that I, ROMAN EIcHsTEADT, a citizen of the United States,residing at Michigan City, in the county of La Porte and State ofIndiana, have invented certain new and useful Improvements inBall-Bearings; and I do declare the following to be a full, clear, andexact description of the invention, such as will enable others skilledin the art to which it appertains to make and use the same, referencebeing had to the accompanying drawings, and to the letters and figuresof reference marked thereon, which form a part of this specification.

My invention relates to ball-bearings, and more particularly to an improved ball-bearing especially adapted for use in connection withvehicle-hubs.

The objects sought to be accomplished are simplicity and durability ofconstruction, longer and less frictional bearings, and facility ofremoval and assembly of the parts. These objects are accomplished by theemployment of an improved double-ended coupling connecting duplicateremovable housings or sections in which the ball-bearings aresituated.

The invention further consists in novel ballraces situated in removablecups, and in improved bearing-collars secured on the axlespindle,together with certain other improved features and combinations morefully described hereinafter.

In the accompanying drawings, Figure 1 represents a longitudinal sectionof a hub with Inyinvention applied thereto; and Figs. 2 to 6, inclusive,detail views of certain parts.

The wheel-hub is shown at A,while B represents the axle, and C thespindle.

I employ a double-ended screw-threaded coupling 1, provided withremovable flanges 2 for preventing the coupling and its connections fromturning within the hub. This coupling affords connection betweenscrewthreaded duplicate cup-shaped vsections 3,

which are provided with shoulders to pre-v vent longitudinaldisplacement of the hub. Notches 4L are provided, so that a spanner maybe inserted and the sections screwed on or unscrewed from the coupling.

I employ a removable thimble 5, which snugly fits the cup of thesection, being pro- Serial No. 583,081. (No model.)

vided with notches 6, and having its base apertured for the passage ofthe spindle C. This thimble holds the balls and improved ball-races.

The ball-races consist of inner and outer annular rings 7 and 8 andintermediate rings 9. The inner ring 7 is iiat on one side to conform tothe base of the thimble, but its remaining face is provided with aball-raceway 10. The outer ring 8 is beveled at 8a on its outer face toform a suitable abutment for a removable bearing-collar 15, secured onthe spindle, and which will be described hereinafter. The remaining faceof this ring is provided with a ball-raceway 8". Between the inner andouter ball-races are situated intermediate rings 9, provided on bothfaces with ball-raceways. The peculiar construction of the ball-racesrenders it impossible for the ball to drop out when the spindle is notin position.

The axle-spindle C is provided with two enlargements 13 and 14, uponwhich are secured respective spindle-bearing collars 15 and 16. Thecollars are identical in construction, but are secured to the spindle bydifferent means. They are cylindrical for the major portion of theirlength to provide a bearing-surface 17 for the balls, but are providedat their ends with enlarged portions 18, a beveled shoulder 15a beingprovided to form an abutment for the bevel 8*,whereby all the ringsinthe thimbles are held in position. The enlargements of thesebearing-collars are grooved 'at 19 for the reception of the usual feltpacking-rings 20,which are protected by outer metallic rings 2l. As itis usually unnecessary to remove the inner collar 16 when adjusting theparts, I secure this permanently to the spindle in any preferred manner.The outer collar is prevented from turning by a stud22, projecting intoa keyway 23, cut in the spindle. The parts are held in position by theusual nut 24 and washer 25, the screw-threads on the end of the spindlebeing reduced in diameter, so that a shoulder 26 is formed,which servesas an abutment for the face of the nut, so that the latter cannot bescrewed on so far as to crowd or injure the parts and' cause unnecessaryfriction.

The assembly of the parts is accomplished as follows The double-endedcoupling is first inserted in the hub and the inner and outer IOOcup-sections screwed on. The thimbles having previously been filled withthe successive layers of rings and balls, are then forced within thecups,being held in position by frictional contact with the latter. Thespindle is now inserted and the outer bearing-collar forced intoposition. Upon adjusting the nut on the end of the spindle, the partsare brought into proper relation.

Should it be necessary to repair the balls or ball-races, this may bereadily accomplished without the annoyance of having to take the wholebearing apart, as the nut can be removed and the troublesome thimbletaken out.

Having thus described my invention, what I claim as new, and desire tosecure by Letters Patent, is-

l. In a ball-bearing, the combination with a double-ended screw-threadedcoupling adapted to receive a spindle, of a pair of oppositelyextendedcups having Jthreaded ends which engage those ofthe coupling, removablethimbles fitting within the cups and adapted to surround the oppositeends of the spindle, a pair of spindle-bearing collars adapted to fitwithin said thimbles, a series of ball-races encircling the collars,removable Vrings between the balls, and retaining devices adapted toscrew upon the spindle, all arranged and adapted to operate in themanner and for the purpose specified.

2. In a ball-bearing, the combination with a spindle, of a double-endedcoupling, cupped c sections connected thereto, thimbles held within thecupped sections, and bearing dcvices within the thimbles.

In witness whereof I affix my signature in presence of two witnesses.

ROMAN EICIISTEADT.

`Witnesses:

J. F. GALLAHER, XVM. A. BRAY.

